title: Facilitated charge transport in ternary interconnected electrodes for flexible supercapacitors with excellent power characteristics.
abstract: Flexible and high performance supercapacitors are very critical in modern society. In order to develop the flexible supercapacitors with high power density, free-standing and flexible three-dimensional graphene/carbon nanotubes/MnO2 (3DG/CNTs/MnO2) composite electrodes with interconnected ternary 3D structures were fabricated, and the fast electron and ion transport channels were effectively constructed in the rationally designed electrodes. Consequently, the obtained 3DG/CNTs/MnO2 composite electrodes exhibit superior specific capacitance and rate capability compared to 3DG/MnO2 electrodes. Furthermore, the 3DG/CNTs/MnO2 based asymmetric supercapacitor demonstrates the maximum energy and power densities of 33.71 W h kg(-1) and up to 22,727.3 W kg(-1), respectively. Moreover, the asymmetric supercapacitor exhibits excellent cycling stability with 95.3% of the specific capacitance maintained after 1000 cycle tests. Our proposed synthesis strategy to construct the novel ternary 3D structured electrodes can be efficiently applied to other high performance energy storage/conversion systems.
authors.affiliation: School of physical science and technology, Lanzhou University, Lanzhou 730000, China. wanjchen@gmail.com xieeq@lzu.edu.cn.
authors.forename: Wanjun
authors.initials: W
authors.lastname: Chen
authors.forename: Yongmin
authors.initials: Y
authors.lastname: He
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Li
authors.forename: Jinyuan
authors.initials: J
authors.lastname: Zhou
authors.forename: Zhenxing
authors.initials: Z
authors.lastname: Zhang
authors.forename: Changhui
authors.initials: C
authors.lastname: Zhao
authors.forename: Chengshi
authors.initials: C
authors.lastname: Gong
authors.forename: Shuankui
authors.initials: S
authors.lastname: Li
authors.forename: Xiaojun
authors.initials: X
authors.lastname: Pan
authors.forename: Erqing
authors.initials: E
authors.lastname: Xie